Improvement in manufacture of flanged articles of paper



H. A. HOUSE. vMzmufeeture of Flanged Articles of Paper.

No. 209,686. Patented Nov. 5, I878.

II y JZql. 3 z I UNITED STATES PATENT OFFICE.

HENRY A. HOUSE, OF BRIDGEPORT, CONNECTICUT.

IMPROVEMENT IN MANUFACTURE OF FLANGED ARTICLES OF PAPER.-

Specification forming part of Letters Patent No. 209,686, dated November ,5, W73; ap lication filed July 23, 1878.

A r 10 all whom it may concern:

Be it known that I, HENRY A. HOUSE, of Bridgeport, Fairfield county, Connecticut, have invented Improvements in the Mannfacture of Flanged Articles of Paper, 850., of which the following is a specification:

My invention has for its object to produce articles of paper, or of paper and other material combined, (as, for instance, shallow boxlids, &c.,) drawn from a single sheet of material, with a flange at right angles to the bottom or top.

Heretoforc such articles have been produced by forcing disks of paper through circular dies, or by uniting strips of -paper to the edges of disks. 4

The first mode of manufacture will frequently tear or break the paper, and the article formed will not retain its shape, but flattensunder the action of moisture. Moredver, the flange is irregular in thickness from the folding or wrinkling of the material as the flange is termed up, so that the articles can only be used for rough, cheap goods.

The second mode of manufacture is expensive, and produces an article lackin g in strength, durability, and finish. y

In order to produce a neat, strong, and durable article, I subject disks of the material to the action of heated drawing-dies, as described hereinafter, and illustrated in the accompanymg drawin g,'formin g part of this specification, and in which- Figure l is a sectional elevation, illustrating one form of apparatus which may be used; Fig. 2, a transverse section on the line 1 2, Fig. 1; Fig. ,3, a, perspective View, showing a box-lid completed.

The material employed may be paper of any suitable texture, thickness, or quality, or paper and veneer, or other material, or a suitable composition-as for instance, paper-pulp or papier-mach combined with clay and rubber cement formed into sheets. Whatever be the material, it is first cut into pieces of the proper shape, and then, preferably afterbeing dampened, subjected to the action of the dies or formers.

A stationary die, A, and a series of movable dies, B, are shown in the drawing, the stationand so on.

ary die A being secured to any suitable supat the mouth, corresponding in shape and width 1 with that of the article to be made. The die A is hollow throughout the whole or part of its extent, to receive superheated steam, or is provided with any suitable appliances, as gasjets, for heating thesa'me.

The dies 13 consist each of a ring or block having an extension, at, corresponding in size and shape with the interior of the article to be formed; and abovethe' extension a are a sharp-edged rib, e, and a recess, a, for a pur-- pose described hereinafter.

The disk 3 of material to be formed into a box-lid or other article, is placed on the end of the die A, above the flaring mouth, and one of the dies B is placed centrally on the disk. Another disk 3 is then' placed on the first die B,'.and-another die B upon the last disk,

The dies B are now forced downward, when the lower disk y will be carried into the flaring mouth of the opening a, and

its edges will be thereby drawn or turned up.

As the parts pass into the opening :0 any projecting portions of the turned-up edge more than-is required to envelop the portion a.

of the die will be caught between the edge of the rib e and the side of the opening ac and seyered, the loose portionbein g received by therecess 0'. Each disk, successively, is thus turned up at the edge and trimmed as the dies pass downward, and the flanges thus formed are compressed, heated, dried, planished, conit densed, and set in their shape between the a two dies as the movements are continued, so

that as each passes from the lower end of the i parted to the article, the gum being melted and aiding in imparting set to the material.

In some instances the paper may be slit or 7 the top with aprojection,

cut at the edges before folding; butthis is more suitable for the manufacture of box-- bodies, requires, generally, additional apparatus, and will be fully described in another application for Letters Patent for the manufacture of boxes.

Although I have shown apparatus adapted to make circular articles, the process is not confined to this shape, nor to articles having flanges of any particular depth, the latter depending upon the character of the material and its capacity to condense and support the strain. It will be apparent, however, that, by the use of dies constructed as described, there is little strain tending to tear the flange from the head, owing to the fact of the flange havin g its bearingat the edge against the under side of the rib e, which therefore forces the flange with the body without there being any action tending to separate the two.

A greater planishing efl'cct maybe obtained by turning the dies B as they descend, which may bedone by making corresponding recesses in the tops and bottoms of "the dies (1, which emboss but do not break the material between them, and there imparting a twist to the last block of the pile.

It will be obvious that but a single block may be used but more than one is much preferable, as a better set is imparted to the articles compressed between the blocks.

In order to give greater rigidity to the article, each die'or block a may be provided at a, Fig. 1, and at the bottom with a corresponding recess, so as to form a depression and an abrupt shoulder or'inner flange, w, in the top of the article.

thatis, by drawing a sheet of material through a hollow heated die over a traversing former, upon whichthe edge of the material is folded to form the flange, and on which it remains during the passage of the same through the stationary die, as specified.

2. The mode of forming flan ged articles, consisting in passing a series of independent dies,

B, one after another, with intervening sheets of material, through the die A, substantially as specified.

3.. The within-described flanged articles of paper or equivalent material, made of one piece with a flange, planishe d, and of uniform thickness, as set forth.

4. The die 13, provided with a'project-ion, a, corresponding in form with the article to be drawn, and with a rib, 0, adapted to pass through the outer die, for the purpose set forth.

5. The die provided with a sharp-edged rib, e, and recess 1', as and for the purpose set forth. v

In testimony whereof I, have signed my name to this specification in the-presence of two subscribing witnesses. I

' HENRY A. HOUSE.

Witnesses:

GEORGE A. BIsHoP, HARRY A. HOUSE. 

